Concentration of Solutions
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Questions and Answers

What is the primary factor that determines the classification of a solution as dilute or concentrated?

  • The pressure of the solution
  • The amount of solvent present in the solution
  • The temperature of the solution
  • The amount of solute present in the solution (correct)

What happens to the concentration of a solution when more solvent is added to it?

  • The concentration of the solution increases
  • The concentration of the solution becomes undefined
  • The concentration of the solution decreases (correct)
  • The concentration of the solution remains the same

What is the maximum amount of solute that can dissolve in a specific amount of solvent at a specific temperature?

  • Concentration
  • Dissolution
  • Solubility (correct)
  • Diffusion

What is the range of diameters of particles in a colloid?

<p>Between 1 and 1000 nanometers (C)</p> Signup and view all the answers

What is the term used to describe the distribution of particles in a colloid?

<p>Dispersion (A)</p> Signup and view all the answers

What is the characteristic of particles in a colloid that allows them to remain suspended in the solution?

<p>They are larger than 1 nanometer but smaller than 1000 nanometers in diameter (D)</p> Signup and view all the answers

What is an example of a concentrated solution?

<p>Brine (D)</p> Signup and view all the answers

What is the term used to describe the mixture of solute particles that are larger than those in a true solution but smaller than those that can be seen by the naked eye?

<p>Colloid (A)</p> Signup and view all the answers

What is the factor that affects the solubility of a substance?

<p>Solvent used, temperature, and pressure (D)</p> Signup and view all the answers

What happens to the particles in a colloid over time?

<p>They remain suspended in the solution (B)</p> Signup and view all the answers

Study Notes

Solutions

  • Classified as dilute or concentrated based on the relative amount of solute present
  • Dilute solutions contain a relatively small amount of solute
  • Concentrated solutions contain a relatively large amount of solute

Changing Concentration

  • Adding more solvent to a solution dilutes it and decreases its concentration

Solubility

  • Maximum amount of solute that dissolves in a specific amount of solvent at a specific temperature
  • Depends on the solvent used, as well as temperature and pressure

Colloids

  • Heterogeneous mixture with solute particles larger than those in a true solution
  • Particle size ranges between 1 and 1000 nanometers in diameter
  • Particles remain evenly distributed throughout the solution and do not settle to the bottom of the container
  • Particles are big enough to scatter a beam of light, known as the Tyndall effect
  • The Tyndall effect is a characteristic that distinguishes colloids from solutions

Suspensions

  • Heterogeneous mixture with solid particles spread throughout a liquid without dissolving
  • Particles are big enough (greater than 1000 nanometers) to be seen with the naked eye
  • Particles are undissolved in a given medium

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Description

Determine the classification of solutions as dilute or concentrated based on the amount of solute present. Learn how addition of solvent affects the solution.

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